Edwin s



UNTTED- STATES PATENT @EETCE.

EDl/VIN S; ANDERSON, OF UTIOA, NEW YORK.

DOUBLE-PRESSURE PERCOLATO R.

SPECIFICATION forming part of Letters Patent No. 356,087, dated January 18, 1887.

Application filed June 8, 1885. Serial No. 168,076., (No model.)

To all whom it may concern:

Be it known that I, EDWIN S. ANDERSON, of Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Pressure-Perlocators;

and I do hereby declare that the following is a afull, clear, and exact description of the in- Heretofore the process of filtering consisted chiefly in packing the herbs or drugs carefully in the bottom of a receptacle and adding the liquid, which by gravity percolates downward and is discharged at the bottom. I am also aware that water or liquid pressure has been used in percolators; but so far as I am aware, variations in the closeness of the packing of the drugs or herbs has been the only device used for counterbalancing or counteracting the pressure.

In the accompanying drawings similar letters of reference refer to corresponding parts throughout the several views.

Figure lisa vertical section of my improved hydraulic percolator. Fig. 2 is a vertical section of my improved piston.

Having described my invention in relation to the figures illustrated in the accompanying drawings, 1 will now proceed to describe the same with reference to the letters marked" thereon.

In the drawings my improved percolator is shown mounted on frame A, but which may be mounted on any other suitable device for supporting the same.

a represents a cylindrical tubular percolating reservoir, supported on the frame by flanges a a. In the bottom is outlet a, connecting with the flexible discharge-pipe, provided with stopcock a for controlling the flow of the liquid and for producing maceration of the drug under pressure. It is necessary to have the mouth of the percolating-reservoir closed tightly. I accomplish this by means of a piston-head, which is movable in the percolating reservoir to accommodate different quantities of drugs, as it is obvious that this receptacle.

a stationary cap or cover for the mouth of the percolating-reservoir would admit too great a quantity of fluid; but by using my movable piston-head, which may be adjusted to accommodate the Varying quantities of the drug in different cases, this is avoided.

B represents piston head formed in two parts-the upper part, I), and the lower section, b The two are held together by bolts and nuts. The sections are provided with an annular groove, 0 for the reception of a rubber-ring packing, b. For compressing the rubber to secure a tight packing for this piston, the stem b is attached to section I) of the piston, passes through an aperture in section b, and is provided with thumb screw for tightening the two plates for extending the rubber packing. This piston constructed as described is placed in the cylindrical percolating-reservoir, and is designed to be moved therein for accommodating different quantities of the drug, which may be elevated orlowered to secure any desired pressure of the liq-.

uid in the percolating-reservoir.

0 represents a liquid-reservoir.

0 represents a cord working over pulleys c c",for elevating or' depressing the reservoir for securing the required pressure. The reservoir at its bottom connects with pipe 0 at 0 the lower end passing through piston B, for discharging the fluid into the percolator.

represents a pinch-cock for shutting off the liquid.

D represents the herbs or drugs in the percolating-reservoir.

E represents a counter-pressure-tube for regulating the flow of the liquids into receptacle e, which is controlled by raising or lowering This feature of my invention is of prime importance in this connection, since by this construction a counter-pressure is produced and the flow of the liquid checked at any time, at will, thereby detaining the fluid in the filtering-reservoir under pressure, producing maceration under pressure, and promoting the action of the menstrum on the substance. Thus the fiow may be caused to stop or may be regulated at will.

I provide table e,which is moved vertically by cord 6", running on pulley e attached to upright e, and is held byhoolr e in any de- ICO sired position. Other means of elevating or depressing receptacle for controlling the discharge may be used.

I am also aware of Patent N 0. 26,820, of V.

means for tightening or loosening the plates,

whereby the packing may be extended or contracted for adjusting and tightening the piston in the percolating-reservoir, substantially as shown. V

2. The combination of the cylindrical percolating-reservoir having one end open and the opposite end partially closed,and provided with an outlet, and the piston adjustable within the reservoir provided with means for packing and tighteningthe piston.

3. The combination of the cylindrical percolating-reservoir having one end open and the opposite end partially closed and provided with an outlet, the piston adjustable within the reservoir, having an annular groove provided with rubber packing, with means for tightening or loosening the same, cock for controlling the outlet.

4. The combination of the cylindrical percolating-reservoir having one end open and the opposite end partially closed and provided with an outlet, the piston-head adjustable within the reservoir,having an annular groove provided with rubber packing, with means for tightening or loosening the same for the and the stoppurpose ofaccom modating the adjustment and tightening the same, and the flexible tube connected to the discharge end of the reservoir.

5. The combination of the cylindrical percolating-reservoir having one end open and the opposite end partially closed and provided with an outlet, the piston head adjustable within the reservoir, having an annular groove with an outlet, the piston -head adjustable,

within the reservoir, provided with means for packing and adjusting the piston, and the liquid-reservoir connected with flexible tube, with the adjustable piston, substantially as described.

7. The combination of the cylindrical percolating-reservoir having one end open and the opposite end partially closed,the discharge end being controlled by a stop-cock, the piston adjustable within the reservoir, provided with means for packing and adjusting the piston, and the vertically-adjustable liquid-reservoir connected with the adjustable piston, with flexible tube.

8. The combination of the cylindrical percolating reservoir having one end open and the opposite end partially closed, the flexible tube connected to the discharge end discharging into a vertically-adjustable receptacle, the piston adjustable within the reservoir, with means for adjusting and packing the same, and the verticallyadjustable reservoir connected with the adjustable pistonhead, with flexible tube for producing maceration of the solvent under pressure.

9. The combination of the tubular percolating-reservoir, substantially of the same diameter, one end open and the opposite end par tially closed, and,tl1e piston-head adjustable therein, with means for adjusting and packing the same.

In witness whereof I have affixed my signa ture in presence of two witnesses.

EDWVIN Sp ANDERSON.

Witnesses:

EDWIN'H. RISLEY, DANIEL MOGUOKEN. 

